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Open Access

ARTICLE

Enhancing Thermal Performance of Building Envelopes Using Hemp Wool and Wood Wool with Phase Change Materials

Salma Kouzzi1,*, Mouniba Redah1, Souad Morsli2, Mohammed El Ganaoui3, Mohammed Lhassane Lahlaouti1
1 Laboratory of Energy, Faculty of Sciences of Tetuan, University of Abdelmalek Essaadi, Tetuan, 93002, Morocco
2 LEM3, ENIM, University of Lorraine, Metz, 57078, France
3 LERMAB, IUT Henri Poincaré de Longwy, University of Lorraine, Longwy, 54400, France
* Corresponding Author: Salma Kouzzi. Email: email
(This article belongs to the Special Issue: Materials and Energy an Updated Image for 2023)

Fluid Dynamics & Materials Processing https://doi.org/10.32604/fdmp.2024.055890

Received 09 July 2024; Accepted 21 August 2024; Published online 14 September 2024

Abstract

This study investigates the potential for enhancing the thermal performance of external walls insulation in warmer climates through the combination of phase change materials (PCMs) and bio-based materials, specifically hemp wool and wood wool. Experimental tests using the heat flow method (HFM), and numerical simulations with ANSYS Fluent software were conducted to assess the dynamic thermal distribution and fluid-mechanical aspects of phase change materials (PCMs) within composite walls. The results demonstrate a notable reduction in peak indoor temperatures, achieving a 58% reduction with hemp wool with a close 40% reduction with wood wool when combined with PCMs. Fluid-mechanical analysis indicates that PCMs act as efficient indoor temperature regulators by storing excess heat during hot periods and releasing it later during phase transitions. Furthermore, the homogeneous distribution of the liquid fraction and natural convection during phase change contribute significantly to the improvement in heat transfer rates, resulting in a 96% reduction compared to hemp wool and wood wool without PCMs.

Keywords

Bio-based materials; phase change material (PCM); heat flow method; thermal performance; external wall insulation; hemp wool; wood wool; ANSYS Fluent software; dynamic thermal distribution; fluid-mechanical analysis

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